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From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-11319) No need to use favored node mapping initialization to find all regions
Date Mon, 16 Jun 2014 20:01:02 GMT

     [ https://issues.apache.org/jira/browse/HBASE-11319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jimmy Xiang updated HBASE-11319:
--------------------------------

    Status: Patch Available  (was: Open)

Attached a patch that gets user regions from internal memory instead.

> No need to use favored node mapping initialization to find all regions
> ----------------------------------------------------------------------
>
>                 Key: HBASE-11319
>                 URL: https://issues.apache.org/jira/browse/HBASE-11319
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>            Priority: Minor
>         Attachments: hbase-11319.patch
>
>
> During a clean re/start, favored node mapping initialization scans meta for an assignment
snapshot. We can avoid this scan since such info is already loaded into region states. For
small cluster, this is not a big deal. However, if there are lots of regions, the scan is
better not to do.



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